Georg nicolaus thurzg



(No Model.)

G. N. THURZO.

ROTARY CAR FOR BOOT HEELS. No. 348,800. Patented Sept. 7, 1886.

INVENTUR: WITNESSES; 4 ,Z a

By lubvfliiorzz 6y; 7

n. PEYERS. Pholvljlhogmphw. Wmhmgtnn, o. c.

UNITED STATES PATENT OFFICE.

GEORG NICOLAUS TIIURZO, OF VIENNA, AUSTRIA-HUNGARY.

ROTARY CAP FOR BOOT-HEELS.

SPECIFICATION forming part of Letters Patent No. 348,800, datedSeptember '7, 1886. Application filed June 9, 1886. Serial No. 204,582.(No model.)

To all whom it may concern:

Be it known that I, Gnono NIooLAUs THURZC'), of the city of Vienna, inthe Austro- Hungarian Empire, have i nt'cr cod certain new and usefulImprovements in the Manufacture of Rotary Gaps for the Heels of Boots,Shoes, Crutchcs, and other Objects; and of which I declare the followingto be a specification.-

My invention relates to rotary heels for boots or shoes, the object ofwhich is to insure an equal wear of the heels and to prevent their beingworn off at one part more than at another.

It is a well-known fact that many persons wear off the soles and heelsof their boots or shoes in a very unequal man ner-,and that such unequalwear is soonest apparent at the heels. To walk with such an unequallywornof'f boot or shoe is not only uncomfortable and unsafe, but is alsovery detrimental to the other parts of the said boot or shoe, not tomention even theinj urions eifects which such a partly and unequallyworn-off boot or shoe is sure to produce upon the organism of thewearer.

According to my invention the one-sided or partial wearing-oft'of theheel is totally impossible, as the same is attach d or connected withthe boot or shoe in such manner that it is allowed to revolve in walkingin accordance with the movements of the wearer, so that a constanttreading upon one and thesame part of the heel is quite impossible, asthe latter moves or turns a little in walking or even at every step ofthe wearer. To be sure, however, that the heel does not remain in oneand the same position, the same may be turned somewhat when the boot isbeing cleaned or put on by the wearer.

In the accompanying drawings my new rotary heel is represented asfollows: Figure I is a top view with the cover-plate removed. Fig. II isa view of the cover-plate seen from below. Fig. III are sections throughtheheel and cover-plate. Fig. IV shows the complete heel in section, andFig. V is a modification of the cover-plate. Figs. VI and VII repre sentthe requisite parts for securing and taking off the heel, said partsconsisting of the forked locking-plate and the draw-pin.

The chief componen parts of these rotary heels consist of two steeldisks, 5- and s',which gear with each other, the latter of which issecured to the boot or shoe, and is made to receive the former, whichcatches or gears into it, a piece; :0, of india-rubber and a stoutleather plate or disk Z forming the exterior surface of the heel.

The aforementioned steel disks 8 and s are connected to each other by aknob, 7;, and the forked locking-plate g.

The indie-rubber plate 22 and the leather plate I are screwed orfastened to the steel disk 8 by means of screws, rivets, or cement, orsome other suitable binding substance. The knob 7a is riveted to thesteel disk or plate 8', Fig. III, and can be passed through the circularorifice or opening 0 of the steel disk or plate Vhen these two steelplates or disks are placed upon each other, the forked locking-plate 9,Fig. VI, is,with its projection upward, introduced into the orifice oropening a in theindia-rubber plate o, and entirely pressed into it, thustaking hold of and embracing the bolt of the knob 75, whereby the steeldisk or plate 8 is able to revolve around its own axisz'. 0., aroundthat of the knob is. In order to disjoin theheel or to takethe componentparts of same to pieces,I employ the extractor z,Fig.

VII, which is pressed into the india-rubber plate below the forkedlockiug-plate,Fig. IV,

where the bent or hooked point of the said extractor catches into thehole a of the lock ing-plate g, whereupon the latter can be pulled outwithout difiiculty.

These heels are made of the best material, and the component parts ofsame are firmly connected with each other by rivets and screws, theindia-rubber plate '0 and leather plate? being sccuredto the disk 8 in asimilar manner.

\Vhen in use, it is desirable to grease the heels between the two steelplates or disks about once a week with oil or parafiine.

The modification of the fixed cover-plate shown in Fig. 5 consists of aplate of thr same form as plat-e s,with the difference,ho\\ ever,thatthe knob k is not rigidly secured or fixed to the samc,but that aremovable knob. k,is employed instead of thesame. The man ner ofsecuring the various pa-rts with each other, however, remains the same.

It need hardly be mentioned that the lower or outside leather plate, I,may be omitted S( that time wearer could walk on the indie-rubber, orthat the indie-rubber plate may be omitted, and that, consequently, thewhole heel could consist of leather.

Hating 9 pa ticnlarly described and ascertained the nature of myinvention and in what manner the same is to be performed,I de- Clarethat what I claim as new and patentable, and desire to secure by LettersPatent, is

A rotary heel for boots and shoes, consisting of an upper part or steeldisk, s',rigidly fixed to the boot or sh0e,and an under part or steelplate, 8, which. is carried and rotates in the former, both parts beingsuitably connected with each other by a. knob, is, and forked loclr- I 5jug-plate g,snbstantially as described, and rep resented in theaccompanying drawings.

Witnesses:

VICTOR TISDELER,

Engineer. EDMUND J UssEN.

